examples/fx2/py/fx2load.py

   1 from time import sleep
   2 from fx2 import fx2
   3
   4 f=fx2.fx2()
   5 f.open(0x04b4,0x0082)
   6
   7 def reset_device(reset):
   8  print reset and "Put device in reset" or "Set device to run"
   9  write_ram (0xe600,reset and '\x01' or '\x00', 1)
  10
  11 def write_ram(addr,data,length):
  12  transferred=0
  13  while(transferred<length):
  14   this_transfer_size=length-transferred>1024 and 1024 or length-transferred
  15   buf=data[transferred:]
  16   ret=f.do_usb_command( buf,
  17     0x40,
  18     0xa0,
  19     addr+transferred, 0,
  20     this_transfer_size )
  21   if (ret>0):
  22    print "wrote %d bytes" % ret
  23    transferred+=ret
  24   else:
  25    print "Error: %d" % ret
  26    return
  27
  28 def reset_bix(filename):
  29  """
  30   Use this function to reset your firmware.  You'll need to reopen the device afterward.
  31  """
  32  reset_device(True)
  33  bix=open(filename).read()
  34  print "loading bix file of length: %d" % len(bix)
  35  write_ram( 0, bix,len(bix) );
  36  reset_device(False)
  37  print "Closing device after reset"
  38  f.close();
  39